CN100578176C - Testing method for air tightness of flexible packaging products - Google Patents
Testing method for air tightness of flexible packaging products Download PDFInfo
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- CN100578176C CN100578176C CN200610062506A CN200610062506A CN100578176C CN 100578176 C CN100578176 C CN 100578176C CN 200610062506 A CN200610062506 A CN 200610062506A CN 200610062506 A CN200610062506 A CN 200610062506A CN 100578176 C CN100578176 C CN 100578176C
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- 238000009459 flexible packaging Methods 0.000 title abstract description 26
- 238000012360 testing method Methods 0.000 title description 10
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 239000007789 gas Substances 0.000 claims description 31
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 15
- 239000001307 helium Substances 0.000 claims description 13
- 229910052734 helium Inorganic materials 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 8
- 238000000034 method Methods 0.000 abstract description 17
- 238000011896 sensitive detection Methods 0.000 abstract description 2
- 235000013305 food Nutrition 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
Description
技术领域 technical field
本发明涉及产品的包装领域，尤其是涉及软包装产品及软包装电池气密性的检测方法。The invention relates to the field of product packaging, in particular to a method for detecting air tightness of soft-packaged products and soft-packaged batteries.
背景技术 Background technique
密封式软包装产品因其体积小、重量轻、易存储等诸多优点而得到广泛应用。但是这种软包装的气密性还没有行之有效的检测方法。目前，主要有两种软包装电池气密性判断方法：一是人工视觉直观判断法，人工视觉直观判断法简便，但误差大、轻微漏气漏液无法识别；另一种方法是软包装产品置于密封容器中加压或减压来检测，例如中国专利公开号为CN1719218A公开了一种封闭软包装袋密封性能快速检测方法，该方法是通过对封闭完好的软包装袋样本和待测的封闭软包装袋外部同步加压和减压，比较这一过程中被测的软包装和封闭完好的软包装样本体积变化差异，判断待测的软包装袋密封程度，这种检测简单、检测速度快；但是，用这种检测方法在加压和减压的过程中，容易造成某些检测产品其包装结构损坏，导致无法修复，即检测后的产品无法通过再次密封达到产品要求，如软包装的电池，不仅检测方法对漏气漏液较严重的电池检测后包装壳严重发鼓变形无法修复；且对轻微漏气漏液的软包装电池检测灵敏度很低。Sealed flexible packaging products are widely used because of their small size, light weight, easy storage and many other advantages. However, there is no effective detection method for the airtightness of this flexible package. At present, there are mainly two methods for judging the airtightness of soft-packaged batteries: one is the method of visual judgment by artificial vision, which is simple, but the error is large and slight air leakage cannot be identified; the other method is that the soft-packed product is placed Pressurization or decompression in a sealed container is detected. For example, the Chinese patent publication No. CN1719218A discloses a rapid detection method for the sealing performance of a closed flexible packaging bag. Simultaneous pressurization and decompression, compare the difference in volume change between the tested flexible package and the sealed flexible package sample in this process, and judge the sealing degree of the flexible package to be tested. This test is simple and fast; however, this test In the process of pressurization and decompression, it is easy to cause damage to the packaging structure of some tested products, which cannot be repaired, that is, the tested products cannot meet the product requirements through resealing, such as soft-packaged batteries, not only the test method is not only sensitive to air leakage The packaging shell of the battery with serious leakage is severely bulging and deformed and cannot be repaired; and the detection sensitivity of soft packaging batteries with slight air leakage and liquid leakage is very low.
发明内容Contents of the invention
本发明的目的在于解决现有技术中软包装产品在检测密闭性容易破损且灵敏性差的问题，提供一种在检测气密性时产品包装不易破损且精度高的软包装产品密闭性的检测方法。The purpose of the present invention is to solve the problem that the airtightness of flexible packaging products is easily damaged and the sensitivity is poor in the prior art, and to provide a method for detecting the airtightness of flexible packaging products that is not easy to be damaged and has high precision when testing airtightness.
本发明的另一目的是解决现有技术中软包装电池在检测密闭性时容易破损且灵敏性差的问题，提供一种在检测气密性时不易破损且精度高的软包装电池密闭性的检测方法。Another object of the present invention is to solve the problem of easy damage and poor sensitivity when testing the airtightness of soft-packaged batteries in the prior art, and provide a method for detecting the airtightness of soft-packaged batteries that is not easy to be damaged and has high precision when testing airtightness.
为实现上述目的，本发明是采用以下技术方案来实现的：To achieve the above object, the present invention is achieved by adopting the following technical solutions:
提供一种软包装产品气密性的检测方法，其包括下列步骤：A method for detecting the airtightness of flexible packaging products is provided, which includes the following steps:
a、将待测软包装产品置于一密闭容器中；a. Place the flexible packaging product to be tested in an airtight container;
b、向密闭容器中充入检测气，使容器气压升高；b. Fill the airtight container with detection gas to increase the pressure of the container;
c、再将软包装产品置于另一密闭容器中，并对该密闭容器抽真空，或先将b步骤所述的密闭容器中的检测气排除后再抽真空；c. Place the flexible packaging product in another airtight container and evacuate the airtight container, or first remove the test gas in the airtight container described in step b and then evacuate;
d、用检测装置检测c步骤的密闭容器中检测气原子的含量是否超过空气或其它无检测气杂质的气体中的含量，如果超过则说明软包装产品漏气，否则不漏气。d. Use a detection device to detect whether the content of the detection gas atoms in the airtight container in step c exceeds the content in air or other gases without detection gas impurities. If it exceeds, it means that the flexible packaging product is leaking, otherwise it is not leaking.
上述方法中，所述的a步骤还可以是将待测软包装电池置于一密闭容器中，并对该密闭容器抽真空。In the above method, the step a may also be placing the soft-packaged battery to be tested in an airtight container, and vacuuming the airtight container.
所述的检测气是惰性气体，优选氦气。The detection gas is an inert gas, preferably helium.
本发明还提供一种软包装电池气密性的检测方法，其包括下列步骤：The present invention also provides a method for detecting the airtightness of a flexible package battery, which comprises the following steps:
a、将待测软包装产品置于一密闭容器中；a. Place the flexible packaging product to be tested in an airtight container;
b、向密闭容器中充入检测气，使容器气压升高；b. Fill the airtight container with detection gas to increase the pressure of the container;
c、再将软包装产品置于另一密闭容器中，并对该密闭容器抽真空，或先将c. Put the flexible packaging product in another airtight container and vacuumize the airtight container, or put the
b步骤所述的密闭容器中的检测气排除后再抽真空；The test gas in the airtight container described in step b is removed and then vacuumized;
d、用检测装置检测c步骤的密闭容器中检测气原子的含量是否超过空气或其它无检测气杂质的气体中的含量，如果超过则说明软包装电池漏气，否则不漏气。d. Use a detection device to detect whether the content of the detection gas atoms in the airtight container in step c exceeds the content in air or other gases without detection gas impurities. If it exceeds, it means that the soft package battery is leaking, otherwise it is not leaking.
上述方法中，所述的a步骤还可以是将待测软包装电池置于一密闭容器中，并对该密闭容器抽真空。In the above method, the step a may also be placing the soft-packaged battery to be tested in an airtight container, and vacuuming the airtight container.
所述的检测气是惰性气体，优选氦气。The detection gas is an inert gas, preferably helium.
与现有技术比较，本发明的有益效果是，提供一种软包装产品及软包装电池气密性的检测方法，通过将软包装产品或软包装电池置于封闭容器中充入检测气，再将待测产品或电池置于真空容器中，通过检测装置即能判断待测软包装产品或电池是否有漏气的情形，这种方法能对软包装产品或软包装电池的气密性进行高精度的检测，即使软包装产品或电池有细微漏气，选择合适的检测气及灵敏的检测气检测装置可以做到对软包装产品或电池的气密性进行精确检测。Compared with the prior art, the beneficial effect of the present invention is that it provides a method for testing the airtightness of flexible packaging products and flexible packaging batteries. Or the battery is placed in a vacuum container, and the detection device can be used to judge whether there is air leakage in the flexible packaging product or battery. This method can detect the air tightness of the flexible packaging product or flexible packaging battery with high precision. Or the battery has a slight air leak, choosing a suitable detection gas and a sensitive detection gas detection device can accurately detect the air tightness of flexible packaging products or batteries.
具体实施方式 Detailed ways
实施例1Example 1
本实例以软包装食品为例，陈述本发明所述的检测方法：This example takes soft-packaged food as an example to state the detection method of the present invention:
先将一个或多个待测的软包装食品置于密闭容器中，再将氦气充入密闭容器内并保持10s；然后将待测的软包装食品置于一密闭容器中，并对该容器抽真空至0.1Mpa并保持10s，与此同时用氦气检测装置对密闭容器内部检测，所述的检测是在市场上购买，对氦气检测灵敏的检测装置。经过检测装置的检测，看密闭容器中是否有氦气原子的含量是否超过空气中的含量；如果超过则说明软包装食品漏气，否则不漏气；如果有漏气，再将上述放有多个待测的软包装食品重复检测，筛选出漏气的产品。First place one or more soft-packaged foods to be tested in an airtight container, then fill the airtight container with helium and keep it for 10 seconds; then place the soft-packaged food to be tested in an airtight container, and vacuumize the container To 0.1Mpa and keep it for 10s, at the same time, use a helium detection device to detect the inside of the airtight container. The detection is a detection device that is purchased on the market and is sensitive to helium detection. After the detection of the detection device, see if there are helium atoms in the airtight container and whether the content in the air exceeds the content in the air; if it exceeds, it means that the soft packaged food leaks, otherwise it does not leak; if there is a leak, put more than one of the above The flexible packaging food to be tested is tested repeatedly, and the products with air leakage are screened out.
实施例2Example 2
本实例以软包装电池为例，陈述本发明所述的检测方法：This example takes the flexible package battery as an example to state the detection method of the present invention:
先将一个或多个待测的软包装电池置于密闭容器中，并对密闭容器抽真空至0.1MPa保持10s；然后将氦气充入密闭容器并保持10s；再将密闭容器内的氦气用空气或其他无氦气杂质的气体将氦气完全排出后再密封容器，并对容器抽真空至0.1Mpa并保持10s，与此同时用氦气检测装置对密闭容器内部检测，所述的检测是在市场上购买，对氦气检测灵敏的检测装置。经过检测装置的检测，看密闭容器中是否有氦气原子的含量是否超过空气中的含量；如果超过则说明软包装电池漏气，否则不漏气；如果有漏气，再将上述放有多个待测的软包装产品重复检测，筛选出漏气的产品。First place one or more soft-packaged batteries to be tested in an airtight container, and evacuate the airtight container to 0.1MPa for 10s; then fill the airtight container with helium and keep it for 10s; then use the helium in the airtight container Air or other gases without helium impurities completely exhaust the helium and then seal the container, and vacuum the container to 0.1Mpa and keep it for 10s. At the same time, use a helium detection device to detect the inside of the airtight container. The detection is A detection device that is sensitive to helium detection is purchased on the market. After the detection of the detection device, see if there are helium atoms in the airtight container and whether the content in the air exceeds the content in the air; if it exceeds, it means that the soft package battery leaks, otherwise it does not leak; if there is a leak, put more than one of the above The flexible packaging products to be tested are tested repeatedly, and the products with air leakage are screened out.
上述实施例是针对软包装食品和电池进行详细说明的，本发明所述的方法还可用于保健品、药品及精密产品等软包装气密性的检测。The above-mentioned embodiments are described in detail for soft-packaged foods and batteries, and the method of the present invention can also be used for testing the airtightness of soft-packages such as health care products, medicines and precision products.
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| CN200610062506A CN100578176C (en) | 2006-09-07 | 2006-09-07 | Testing method for air tightness of flexible packaging products |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG189688A1 (en) * | 2008-03-31 | 2013-05-31 | Atmi Packaging Inc | Apparatus and method for the integrity testing of flexible containers |
| CN102269641B (en) * | 2011-03-22 | 2016-04-20 | 东莞新能源科技有限公司 | Soft package article tightness detection device and detection method |
| KR101955396B1 (en) * | 2011-11-17 | 2019-03-08 | 삼성에스디아이 주식회사 | Leak test device for pouch of rechargeable battery |
| DE102012210040A1 (en) * | 2012-06-14 | 2013-12-19 | Inficon Gmbh | Tester with a test gas container |
| CN103063381A (en) * | 2012-12-27 | 2013-04-24 | 太原航空仪表有限公司 | Method and device for vacuum cavity leakage detection for sensors with vacuum reference cavities |
| CN104393206B (en) * | 2014-12-02 | 2016-07-13 | 四川捷能新能源科技有限公司 | The method of the connection sealing of the aluminum plastic film edge sealing of detection lithium ion battery |
| CN107631844A (en) * | 2016-07-18 | 2018-01-26 | 万向二三股份公司 | A kind of method for conducting leak test of soft package lithium battery |
| CN108267277B (en) * | 2018-02-01 | 2023-12-22 | 广东丹青印务有限公司 | Air leakage detection device and air leakage detection method for packaging bag |
| CN108871695B (en) * | 2018-06-08 | 2021-01-29 | 合肥国轩高科动力能源有限公司 | A leak detection device for lithium battery before liquid injection |
| CN109186877B (en) * | 2018-08-06 | 2020-06-09 | 深圳市卓誉自动化科技有限公司 | Battery air tightness detection process |
| CN110160714B (en) * | 2019-05-20 | 2021-05-25 | 无锡格林司通科技有限公司 | Soft package battery airtightness inspection system and method |
| CN110608860A (en) * | 2019-09-05 | 2019-12-24 | 无锡格林司通科技有限公司 | Method for detecting air tightness of soft package battery |
| CN111579158A (en) * | 2020-05-19 | 2020-08-25 | 苏州清陶新能源科技有限公司 | Method for testing air tightness of soft package battery |
| CN113074878A (en) * | 2021-05-20 | 2021-07-06 | 张家港清研检测技术有限公司 | Air tightness detection method for automobile battery |
| CN115031900A (en) * | 2022-05-10 | 2022-09-09 | 东莞市创明电池技术有限公司 | Battery air tightness batch detection method and system |
| CN118628490B (en) * | 2024-08-12 | 2024-10-11 | 四川味滋美食品科技有限公司 | Tightness detection method and system for food package |
| CN119688187A (en) * | 2024-12-23 | 2025-03-25 | 惠州亿纬锂能股份有限公司 | Soft pack battery sealing test method |
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